Revolutionary 2-in-1 device combines a 1200A jump starter with a 12V/4 Amp smart battery charger. Engineered in the USA with 60 years of battery expertise. Jump starts up to 6.0L gas & 4.0L diesel engines. Perfect for cars, SUVs, motorcycles, ATVs, boats, and more. Exclusive Auto-switch Technology: Unique feature automatically maintains both vehicle battery and internal jump starter - switches charging between both batteries to ensure they're always ready for use. Advanced safety features: Built-in spark-proof connections, reverse polarity protection, temperature compensation, and microprocessor-controlled charging for worry-free operation. Complete package includes: Charge N Start 4120 Unit, heavy-duty smart clamps with copper-plated jaws, premium storage case, built-in LED emergency light, and 1-year warranty.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov